Sewing-machine for plaited-soled shoes



N.,'J. AND G.. S. FRASER.

SEWING MACHINE FOR PLAITED SOLED SHOES.-

APPLICATION FILED SEP 24,

Patented Aug. 31, 1920.

4 SHEETS-SHEET I.

E? El 1 N., 1. AND. G. S. FRASER.

SEWING MACHl-NE FOR PLAITED SOLED SHOES.

' APPLICATION FILED SEPT. 24, 1918.

1,351,637, I PatentedAug.31,1920.-

4 SHEETS-SHEET 2.

/N VENTOR' NOR/HIV FR /155 JOHN FR/qsE/e Gapg y '5. FRHSER N., 1. AND G. S. FRASER. SEWING MACHINE FOR PLAITED SOLEDISHOES.

APPLICATION FILED SEPT. 24,1918.

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APP-LICAT ION FILED SEPT. 24, 1918- Patented Aug. 31, 1920.

4 SHEETS-SHEET 4.

UNITED, STATES PATENT orries.

NORMAN FRASER, JOHN FRASER, AN D GQRDON SCOTT FRASER; OF ARBROATI-L- SCOTLANIDf SEWING-MACHINE; non summers]; snons,

S pecification of Letters Patent. Arigfii, 1920.

Application filed September 24, 1918. Serial Ito/255,511.

T0 aZZ whom it may concern:

Be it known that we, NO MA FRASER, JOHN FRAsER, and GORDON Soor'r FRASER, subjects of the King of'GreatBritain and Ireland, and residents of Arbroath, Scotland, have invented a certain new arid-useful Improved Sewing-Machines for. Plaited- Soled Shoes, of which thefollowing is the specification. 1 v

The invention has for its object to provide a simple and effective machine for sewing the uppers of jute and like plaited-soled shoes to the sole.

The improved machine is semi-automatic in action, and the sole with the upper lightly tacked on to it and inside out is guided by hand while in the machine, which however feeds it to space the stitches and inserts and locks the stitches automatically. The needle forming the stitches enters the sole (first passing through the upper) aboutnndway of its thickness, and passing diagonally therethrough issues from the under side of the sole at a determinate distance from its periphery, where the'stitch is locked. The sole and upper are presented to the stitching device by hand upon a table so angled relatively to the needle that the latter enters the upper and sole in the direction already set forth, and mechanical means are provlded for preliminarily piercing the sole, for advancing the sole step-by-step between stitches and for locking it in place while each stitch is being formed. The mechanism operating the needle and the piercing awl and the mechanism operating the shuttle carrying the locking thread and the shuttle itself are of substantially well-known form adapted to suittheir specific uses.

An example of a machine made according to the invention is shown on four accompanying sheets of explanatory drawings,

Figures 1, 2 and 3, Sheets 1, 2 and 8 being respectively a plan, a front elevation and an end elevation while Figs. 4 to 8, Sheet 4, are views of details to an enhanced scale.- Y

In this example, the sole with its lightly tacked on upper is received on an inclined table A. Here itis pressed by the operator up against a spiked feed roller A on a shaft A driven by bevel gear A? (Fig. 7) from a shaft A. which shaft is op'eratedby a bell-crank ratchet 'device A from a cam A by means of a link A and lever A pivoted on the machine framing and bearing a tappet roller A engaging the cam A (Figs. 2 and The shaft A is held stationary (except when urged by the ratchet device A bya brake band and weight A (Fig. 7) engaging the periphery of a drum A on the shaft A This spiked roller A engaging the edge of the sole feeds it between successive stitches performed by the needle.

Beneath and reciprocating upthrough an aperture in the table A- is a spiked bar B (shown in detail in Fig. 7) carriedon a on a lever B on a shaft B This shaft B roller A by way of a lever B pivoted on the machine frame, a tappet roller B thereon and a link 13 connecting the lever l3 with a lever B (Fig. 3) on the shaft B A spring B intension between the lever B and the machine frame serves to keep the tappet roller B in contact with its cam and to perform the return stroke of the parts.

The cam A 'is fast on a shaft C carried in the machine framing, and on this same shaft is fast an internal cam C with which there engages a tappetroller C on a lever C pivoted on the machine framing and connected by a link C to a needle bar G sliding in upright guides C and carrying the needle C The needle is served with thread from a roll G which thread passes through an eye C and a pressure device C to a link B pivoted on the machine frame and tensioning deviceshown separately in Fi s.

5 and 6 and consisting of a pair of disks with fingers slotted in their peripheries and bent oppositely. These disks carried between washers on a spindle C are forced together to grip the thread by a spring C The thread thence passes througha pincer-like device (Figs. 4 and 7 consisting ofa fixed blade D and a pivoted blade D urged toward it by a spring D This device is carried on an arm D on a boss 1) rocking on a pin and having a second arm D connected by a link D to a tappet lever D operated by a cam D on the shaft C spiked roller A and 8) of usual form reeiprocated in a race E by means of a link E which connect it to a lever E pivoted in the framing and bearing a tappet roller Ff which engages a cam E (Figs. 1 and 3) on the shaft 0.

The shaft C is driven from a layshaft F (bearing fast and loose pulleys F F for a belt) by means of a spur wheel F engaged by a pinion F on the shaft F.

The operationof the machine is as follows :The sole is held upon the sloping table A and pressed firmly against the The spiked rod B first enters followed by the needle C from the other side. The needle then retires followed by the rod B and finally the spiked roller A rotates feeding the sole forward for the next stitch. The stitch is formed and locked in usual manner.

lVhat weclaim is:

1. In a machine for sewing uppers to jute or like soles to form shoes in combination a vertically reciprocated sewing needle,

an inclined work table to receive the sole and upper so positioned that the needle enters the edge of the sole diagonally and passes through the sole inward and toward the center thereof, a vertically reciprocated spiked bar adapted to pierce the sole in a 'direction opposite to that in which the needle enters, and a spiked roller at substantially the same inclination as the work table and adapted to feed the sole forward between successive stitches, as set forth.

2. In the combination forming the subject matter of claim 1 hereof, an intermittently' rotated spiked roller adapted to engage the edge of the sole and feed the latter forward vbetween successive stitches as set forth. p

In testimony whereof we have signed our names to this specification.

NORMAN FRASER. JOHN FRASER. GORDON SCOTT FRASER. 

